Pump



Oct. 25, 1932. LQCKHART 1,884,608

PUMP

Filed Dec. 5, 1930 4 Sheets-Sheet l In veninr A/OZQTZZ w. ga ziarz wddawA tlomey Oct. 25, 1932. H. M. LOCKHART 1,884,008

PUMP

Filed Dec. 5, 1930 4 Sheets-Sheet 2 A m \a Oct. 25, 1932. H, ocg1,884,008

PUMP

Filed Dec. 5, 1930 4 Sheets-Sheet s Inventor 623w? JOCZZQTZ A tlomeyOct. 25, 1932. M, LOCKHART 1,884,008

PUMP

Filed Dec. 5, 1930 4 Sheeis-Sheet 4 Inventor A homey l atentecl Oct. 25,19321 rarer cr mes HOBART M. LOCZKHART, OF NORTH WILKESBOBO, NORTHCAROLINA PUMP Application filed December 5, 1930. Serial No. 500,388.

This invention relates to certain new and useful improvements in pumpshaving more particular reference to a deep well pump for supplying waterfrom the pump to city houses and the like, and the primary ob]ect oftheinvention is to provide an improved pump head for apparatus foroperating the pump.

The nature and advantages of the apparatus are apparent to those skilledin the artin 9 the light of the following explanation of thedrawingswherein is shown apreferred embodiment of the invention;

A salient feature of the present invention is to provide an improvedpump head which may be readily dismantled and just as readily assembled,facilitating removal of any of the working parts of the same for thepurpose of repair or for any other reason.

A still further object of the invention is to provide a pump head,wherein the gearing forming part thereof is always immerged 1n asuitable lubricant, and further, wherein the head may be driven from anelectric motor of one quarter horse power, and yet deliver at least twogallons of fresh water each minute.

' A further objectof the invention is to provide a pump head that isvery simple in construction, consists of but few parts, and which uponthe opening of spigot arranged in the waterline, the pump will be setinto operation for delivering fresh water.

' Other ob3ects and advantages of the 1nven- I I I tion w ll becomeapparent during a study or n the following description, taken inconnection partly in elevation for more clearly illustrating theautomatic switch arranged in circuit with the electric motor.

Referring in detail to the drawings, it will be seen that the improvedpump head comprises a gear casing 1 within which is journalled atransverse shaft 2 and opposite walls of the gear case are provided withapertures 3 providing bearings for the ends of the shaft. Splined to theshaft 2 is a relatively large gear 1 that is in mesh with a pinion 5splined to a second transverse shaft 6, the said walls of the casingbeing provided with apertures 7 constituting bearings for the end of theshaft 6. Also splined on the shaft 6,'is a relatively large gear wheel 8that is in mesh with a pinion 9 splined to a driven shaft 10, the saidwalls of the gear casing 1 being provided with apertures 11 constitutingbearings for the ends of the driven shaft 10.

In order that the shafts 2, 6 and 10, may be readily removed from thegear case, I prefer to form the gear case into two pieces by dividingthe same alongits horizontal plane, taken longitudinally of the case andnear the center of the several apertures therein.

The line of division extends from one end to the other of the gear caseand thus divides the same into a lower section A and an upper or coversection B. The lower sectionA at the end thereof is provided withsuitably apertured flanges 13 to facilitate anchoring of the section toa suitable support.

Exteriorly of the gear case, the driven shaft 10 on one end thereof isequipped with a pulley wheel 14 over which is trained a drive belt 15,the latter being alsotrained overa relatively small pulley wheel 16 onone end of the shaft 17 of a suitable electric motor M.

Exteriorly of the gear case, on one end of shaft 2, is a crank arm 18and a connecting rod 19 at one end is pivoted as at 20 to a crank pinextending laterally from one end of the crank arm 18. The other end ofthe connecting rod 19 is pivoted to a pin 21 projecting laterally fromthe upper end of a slide member 22 that is slidable on a guide rod 23depending from the gear case 1. The guide rod 23 is braced withrespecttothe casing 1 through the medium of a suitable brace 24.

Bolted to the lower end of the guide rod loo 23 at 25 is a stufiing box26. The stufling box 26 is on the upper end of pump tubing 27. Operablewithin the pump tubing 27, and stuiling box 26 is the usual pump orsucker rod 28 that is secured to suitable means 29 to a lateral lug 3Ointegral with the slide 22.

hianifestly, upon operation of motor M, the rotative movement of theshaft 17 of the motor is transmitted to the driven shaft 10, rotativemovement of the shaft 10 being transmitted to the shaft due through themedium of the gearing arranged within the gear case 1. The crank arm 18rotating with the shaft 2 imparts an oscillatory movement to theconnecting rod 19 thus imparting reciprocatory movement to the slide 22,the latter transmitting its'movement to the sucl ier rod or pump rod 28for forcing water from the well upwardly through thewell' tubing 27 andstuffing box 26 to discharge from the stufling box through alateral'outlet nipple 32 extending l'aterally'from the stufiing box.

On the outer end'of the nipple 31 is a riser 32 connected to the nipplethrough a suitable elbow 33 arranged within the riser 82 is a checkvalve34 and above the check valve a T-coupling35. Leading from a branch ofthe T-coupling 35 is a branch pipe 36 that at its outer end is coupledthrough the medium of elbow 37 with a supply pipe 38 adapted to leadthrough any suitable water main for supplying a house or the like withwater.

Onthe riser 32, above the T-coupling 35 is an air chamber 39 that has anipple 40 rising from the top thereof. Threadedly engaged with theupperend of the nipple 40 is a valve casing 41 within which is arranged anautomatic-valve structure.

The automatic switch structure arranged in the casing 41 comprises apair ofcontacts 42. respectively anchored at one, end to a wall of thecasing as at 43 suitably insulated from saidwallas at 44. Theconfronting ends of the fixed contact 42 are arranged in spacedrelation, and are ada tedto bebridgedby a bridge member 45, t atincludes a vertical stem 46 the free end'of which is suitably engagedwith a diaphragm 47 anchored within the bottom of the casing as at 48. aThe bridge member is normally maintained in contactwith the adjacent endof the fixed contact members 42 through the medium of a coil spring 49'impinging against saidmeinber 45. Secured to the upper end of the coilspring 49 is a plug50 threadedly engaged with the top wall of the casing41.

The, switch structure arranged in the casing 41, as just described, in aclosed condition when the electric motor M is running, said switchbeingv arranged in circuit. with the electric motor. When the airpressure in the, chamber 39 exceeds a predetermined amount, the pressureconsequently exertedon the diaphragm 47 will overcome theact'ion ofthespring 49 thus moving the bridge member 45 out of engagement with thecontact 42 opening the circuit to the motor M for stop-.

ping the same, resulting in a stopping of the pump.

Vvhen a spigot or the like is turned on for drawing water from the pumpthe air pressure is of course decreased, thus permitting the bridgemember 45 under influence of the spring 49'to move downwardly to bridgethe contact 42 thus closing the circuit to the motor for starting thesame whereby the pump is again put in motion as is apparent.

The removal part or cover part B of gear casing l is secured to thefixed or lower part A ofthe gear casing through the medium of suitablebolts 51.

The slide 22'adjacent its upper end isalso provided with a suitablegrease cup 52' for maintaining the slide and the guide rods 33 thereforin a well lubricated condition.

From the foregoing then it will be seen that I have provided a workinghead of this character, which will as before stated'permit the removalof certain of the working parts, without requiring a removal of other ofthe working parts, and that the movable parts of the working headespecially the gearing, and the slide 22 are maintained at alltimes in awell lubricated condition, it being under stood that the casing 1 isadapted to contain a suitable lubricant, and that further the workinghead is capable of operation free of such noise incident tothe operationof such ump.

Even though I have herein shown and described the preferred embodimentof the invention it is to be understood that the-same is susceptible tochanges, modifications and improvements coining within the scope of theappended claim.

Having thus described my invention, what I claim as new is:

In combination with a pump and transmission mechanisinincluding acasing, a vertically arranged rodihaving its upper end connected" withthe casing and its lower end with the pump, a brace connected withthecasing at that side which is o zsite to the side to which the rod isconnected, said brace extending diagonally and having its lowerendconnected with the lower end of therod, a cross head slidablyarranged on the rod and having a projection atits upper endiand aprojection at its lower enchmeans for connecting the piston rod of thepump to the lower projectioma pitman connected tothe upper projectionand to the transmission means.

In testimony whereof I aflix my signature.

HOBART M. LOCKHART.

III

